I think the regime in the US and elsewhere were different before the rise of neoliberalism. In the US and UK, neoliberalism was a response to the inefficiencies of the existing welfare states of the 1960s and 70s. In Chile, neoliberalism was a response to Marxist economic mismanagement. Argentina goes through a cycle of peronism and neoliberalism every few years when they spend themselves into a hole and the implement market reforms to dig themselves out of it. In East Asia, it was a strange mix of military junta authoritarianism with liberalized markets as a defense against the expansion of communism.